test-colorkey.c 6.98 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
/* GStreamer
 * Copyright (C) <2008> Stefan Kost <ensonic@users.sf.net>
 *
 * test-colorkey: test manual colorkey handling
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>
27
28
#include <string.h>

29
#include <glib.h>
30
#include <gdk/gdkx.h>
31
32
33
#include <gtk/gtk.h>

#include <X11/Xlib.h>
34
35

#include <gst/gst.h>
36
#include <gst/interfaces/xoverlay.h>
37
#include <gst/interfaces/propertyprobe.h>
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66

static GtkWidget *video_window = NULL;
static GstElement *sink = NULL;
static guint embed_xid = 0;
static GdkGC *trans_gc = NULL;

static GstBusSyncReply
bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
{
  if ((GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT) &&
      gst_structure_has_name (message->structure, "prepare-xwindow-id")) {
    GstElement *element = GST_ELEMENT (GST_MESSAGE_SRC (message));

    g_print ("got prepare-xwindow-id\n");
    if (!embed_xid) {
      embed_xid = GDK_WINDOW_XID (GDK_WINDOW (video_window->window));
    }

    if (g_object_class_find_property (G_OBJECT_GET_CLASS (element),
            "force-aspect-ratio")) {
      g_object_set (element, "force-aspect-ratio", TRUE, NULL);
    }

    gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (GST_MESSAGE_SRC (message)),
        embed_xid);
  }
  return GST_BUS_PASS;
}

67
68
static void
redraw_overlay (GtkWidget * widget)
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
{
  gdk_draw_rectangle (widget->window, widget->style->white_gc, TRUE,
      0, 0, widget->allocation.width, widget->allocation.height);

  if (trans_gc) {
    guint x, y;
    guint h = widget->allocation.height * 0.75;

    gdk_draw_rectangle (widget->window, trans_gc, TRUE,
        0, 0, widget->allocation.width, h);

    for (y = h; y < widget->allocation.height; y++) {
      for (x = 0; x < widget->allocation.width; x++) {
        if (((x & 1) || (y & 1)) && (x & 1) != (y & 1)) {
          gdk_draw_point (widget->window, trans_gc, x, y);
        }
      }
    }
  }
88
89
90
91
92
93
94
95
96
97
98
99
100
}

static gboolean
handle_resize_cb (GtkWidget * widget, GdkEventConfigure * event, gpointer data)
{
  redraw_overlay (widget);
  return FALSE;
}

static gboolean
handle_expose_cb (GtkWidget * widget, GdkEventExpose * event, gpointer data)
{
  redraw_overlay (widget);
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
  return FALSE;
}

static void
msg_state_changed (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
{
  const GstStructure *s;

  s = gst_message_get_structure (message);

  /* We only care about state changed on the pipeline */
  if (s && GST_MESSAGE_SRC (message) == GST_OBJECT_CAST (pipeline)) {
    GstState old, new, pending;
    gint color;

    gst_message_parse_state_changed (message, &old, &new, &pending);

    /* When state of the pipeline changes to paused or playing we start updating scale */
    switch (GST_STATE_TRANSITION (old, new)) {
      case GST_STATE_CHANGE_READY_TO_PAUSED:
        g_object_get (G_OBJECT (sink), "colorkey", &color, NULL);
        if (color != -1) {
          GdkColor trans_color = { 0,
            (color & 0xff0000) >> 8,
            (color & 0xff00),
            (color & 0xff) << 8
          };

          trans_gc = gdk_gc_new (video_window->window);
          gdk_gc_set_rgb_fg_color (trans_gc, &trans_color);
        }
        handle_resize_cb (video_window, NULL, NULL);
        break;
      default:
        break;
    }
  }
}

static void
window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
{
  GstElement *pipeline = user_data;

  g_print ("stopping\n");
  gtk_widget_hide_all (widget);
  gst_element_set_state (pipeline, GST_STATE_NULL);
  gtk_main_quit ();
}

int
main (int argc, char **argv)
{
  GtkWidget *window;
  GstElement *pipeline, *src;
  GstBus *bus;
157
158
159
  GstStateChangeReturn sret;
  GstPropertyProbe *probe;
  GValueArray *arr;
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179

  if (!g_thread_supported ())
    g_thread_init (NULL);

  if (!XInitThreads ()) {
    g_print ("XInitThreads failed\n");
    exit (-1);
  }

  gst_init (&argc, &argv);
  gtk_init (&argc, &argv);

  /* prepare the pipeline */

  pipeline = gst_pipeline_new ("xvoverlay");
  src = gst_element_factory_make ("videotestsrc", NULL);
  sink = gst_element_factory_make ("xvimagesink", NULL);
  gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
  gst_element_link (src, sink);

180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
  g_object_set (G_OBJECT (sink), "autopaint-colorkey", FALSE, "force-aspect-ratio", TRUE, "draw-borders", FALSE, "colorkey", 0x7F7F7F,  /* gray */
      NULL);

  /* check xvimagesink capabilities */
  sret = gst_element_set_state (pipeline, GST_STATE_READY);
  if (sret == GST_STATE_CHANGE_FAILURE) {
    g_printerr ("Can't set pipelien to READY\n");
    gst_object_unref (pipeline);
    return -1;
  }

  probe = GST_PROPERTY_PROBE (sink);
  if (!probe) {
    g_printerr ("Can't probe sink\n");
    gst_element_set_state (pipeline, GST_STATE_NULL);
    gst_object_unref (pipeline);
    return -1;
  }
  arr =
      gst_property_probe_probe_and_get_values_name (probe,
      "autopaint-colorkey");
  if (!arr || !arr->n_values) {
    g_printerr ("Can't disable autopaint-colorkey property\n");
    gst_element_set_state (pipeline, GST_STATE_NULL);
    gst_object_unref (pipeline);
    return -1;
  }
  if (arr)
    g_value_array_free (arr);
209
210
211
212
213
214
215
216
217
218
219
220
221
222

  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
  gst_bus_set_sync_handler (bus, (GstBusSyncHandler) bus_sync_handler,
      pipeline);
  gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
  g_signal_connect (bus, "message::state-changed",
      G_CALLBACK (msg_state_changed), pipeline);
  gst_object_unref (bus);

  /* prepare the ui */

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  g_signal_connect (G_OBJECT (window), "delete-event",
      G_CALLBACK (window_closed), (gpointer) pipeline);
223
224
225
  gtk_window_set_default_size (GTK_WINDOW (window), 320, 240);

  video_window = gtk_drawing_area_new ();
226
227
  g_signal_connect (G_OBJECT (video_window), "configure-event",
      G_CALLBACK (handle_resize_cb), NULL);
228
229
230
231
  g_signal_connect (G_OBJECT (video_window), "expose-event",
      G_CALLBACK (handle_expose_cb), NULL);
  gtk_widget_set_double_buffered (video_window, FALSE);
  gtk_container_add (GTK_CONTAINER (window), video_window);
232

233
  /* show the gui and play */
234

235
236
237
238
239
240
241
  gtk_widget_show_all (window);
  sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
  if (sret == GST_STATE_CHANGE_FAILURE) {
    gst_element_set_state (pipeline, GST_STATE_NULL);
    gst_object_unref (pipeline);
    return -1;
  }
242
243
244
245
246
  gtk_main ();
  gst_object_unref (pipeline);

  return 0;
}